Willow Bell (Campanula Persicifolia ‘Kelly’s Gold’)

Plant: Table of Contents

Willow Bell (Campanula persicifolia ‘Kelly’s Gold’) – A Complete Guide

In the world of ornamental gardening, the Willow Bell, scientifically known as Campanula persicifolia ‘Kelly’s Gold’, is a gem that adds a touch of elegance and vibrancy to any garden. With its graceful yellow bell-shaped flowers and lush foliage, this perennial plant has become a favorite for garden enthusiasts and landscape designers alike. In this comprehensive guide, we will delve into the various aspects of the Willow Bell plant, including its culture, uses, care requirements, common diseases and pests, propagation, and much more. Whether you’re a seasoned gardener or a novice enthusiast, this guide will equip you with the knowledge to cultivate and appreciate the beauty of the Willow Bell in your own garden.

What is the Willow Bell (Campanula persicifolia ‘Kelly’s Gold’)?

The Willow Bell, also known as Campanula persicifolia ‘Kelly’s Gold’, is a flowering perennial plant that belongs to the Campanulaceae family. It is a cultivar of the Campanula persicifolia variety, prized for its striking yellow-colored bell-shaped flowers. This charming plant is native to Europe and Asia and is renowned for its graceful appearance and long-lasting blooms. With its delicate, nodding flowers and slender stems, the Willow Bell adds a touch of whimsy and elegance to any garden or landscape.

Key Takeaways – Willow Bell (Campanula persicifolia ‘Kelly’s Gold’)

Before we delve into the intricacies of cultivating and caring for the Willow Bell, let’s quickly summarize its key attributes and features. Understanding these key takeaways will provide a foundational understanding of this beautiful perennial plant.

  • Scientific Name: Campanula persicifolia ‘Kelly’s Gold’
  • Common Name: Willow Bell
  • Plant Type: Perennial
  • Flower Color: Yellow
  • Foliage: Lush green, lance-shaped leaves
  • Hardiness Zones: 3-8
  • Mature Height: 2-3 feet
  • Blooming Season: Late spring to early summer
  • Uses: Borders, containers, cottage gardens, and cut flowers

Now that we have a broad overview of the Willow Bell, let’s explore the various aspects of its culture, uses, and care requirements in detail.


Understanding the cultural requirements of the Willow Bell is essential for successfully cultivating and maintaining this elegant plant. From watering needs to soil preferences, the following factors contribute to the overall health and vibrancy of the Campanula persicifolia ‘Kelly’s Gold’.


Proper watering is crucial for the health and vitality of the Willow Bell. While it is essential to keep the soil consistently moist, it is equally important to prevent waterlogged conditions, which can lead to root rot. Here are some tips for watering the Willow Bell effectively:

  • Regular Watering: During the growing season, ensure that the plant receives adequate water, especially during dry spells. Water deeply, allowing the soil to absorb the moisture without becoming waterlogged.
  • Mulching: Apply a layer of organic mulch around the base of the plant to help retain soil moisture and regulate the temperature of the root zone.
  • Avoid Overhead Watering: To prevent moisture-related diseases, such as powdery mildew, avoid overhead watering, especially in the evenings. Water at the base of the plant to minimize foliage wetness.


As a sun-loving perennial, the Willow Bell thrives in locations with ample sunlight. However, it can also tolerate partial shade, especially in regions with intense afternoon sun. Here are some pointers for providing the right amount of sunlight to the Campanula persicifolia ‘Kelly’s Gold’:

  • Full Sun: Plant the Willow Bell in an area that receives at least 6-8 hours of direct sunlight per day for optimal flowering and growth.
  • Partial Shade: In hotter climates, providing partial shade during the afternoon can protect the plant from the harsh sun, especially in the peak of summer.
  • Morning Sun: If full sun exposure is limited, prioritize morning sunlight, as it is less intense and beneficial for the plant’s photosynthetic processes.


While the Willow Bell is relatively low-maintenance, providing the right nutrients can significantly enhance its growth and blooming potential. Here are some fertilizer guidelines for nurturing the Campanula persicifolia ‘Kelly’s Gold’:

  • Balanced Fertilizer: Use a balanced, slow-release fertilizer in the early spring to provide essential nutrients for the growing season.
  • Application Frequency: Apply fertilizer once a month during the active growing period, following the manufacturer’s instructions for dilution and application rates.
  • Avoid Over-Fertilization: Refrain from over-fertilizing, as excessive nutrients can lead to lush foliage at the expense of flowering.


The soil composition plays a crucial role in the overall health and vigor of the Willow Bell. As with most plants, well-draining, nutrient-rich soil is ideal for the Campanula persicifolia ‘Kelly’s Gold’. Consider the following soil recommendations:

  • Well-Draining Soil: Ensure that the soil has good drainage to prevent waterlogged conditions, which can be detrimental to the plant’s root system.
  • Organic Matter: Incorporate organic matter, such as compost or well-rotted manure, into the soil to improve its fertility and structure.
  • pH Levels: The Willow Bell thrives in slightly acidic to neutral soil with a pH range of 6.0-7.5. Regularly test the soil pH and make amendments as necessary.


Pruning is an essential aspect of maintaining the health and aesthetics of the Willow Bell. Proper pruning not only encourages new growth and flowering but also helps to prevent disease and pest infestations. Here are some pruning guidelines for the Campanula persicifolia ‘Kelly’s Gold’:

  • Deadheading: Regularly deadhead spent flowers to encourage continuous blooming and prevent the plant from directing energy into seed production.
  • Cutting Back: After the initial bloom period, consider cutting back the foliage and stems to promote a second flush of flowers later in the season.
  • Stem Pruning: Trim any damaged or diseased stems to maintain the overall health of the plant and prevent the spread of diseases.


The propagation of the Willow Bell allows gardeners to expand their plant collection and share the beauty of this perennial with others. While the Campanula persicifolia ‘Kelly’s Gold’ can be propagated through various methods, division and seed propagation are the most common approaches. Let’s explore these propagation techniques in detail:


Dividing mature clumps of the Willow Bell is an effective way to propagate new plants and maintain the vigor of the existing ones. Here’s a step-by-step guide to division propagation:

  1. Timing: Divide the plant in early spring or late summer when it is not in active growth or under stress.
  2. Prepare the Clump: Gently dig up the mature clump of the Willow Bell and carefully separate the individual crowns, ensuring that each division has both roots and foliage.
  3. Replanting: Plant the divisions in prepared soil at the same depth as the original plant, ensuring adequate spacing between each division.
  4. Watering: Water the newly divided plants thoroughly and maintain consistent moisture as they establish in their new location.

Seed Propagation

While it may take longer to see results, propagating the Willow Bell from seeds can be a rewarding process. Here’s how to propagate the Campanula persicifolia ‘Kelly’s Gold’ from seeds:

  1. Seed Collection: Collect mature seeds from the plant after the bloom period, when the seed pods have dried and started to split.
  2. Seed Starting: Sow the seeds in trays or pots filled with seed-starting mix, lightly covering them with a thin layer of soil.
  3. Germination: Place the containers in a warm, bright location and keep the soil consistently moist until germination occurs.
  4. Transplanting: Once the seedlings have developed several sets of true leaves, transplant them into individual pots or directly into the garden.

Container Popularity

The Willow Bell’s graceful and compact nature makes it well-suited for container gardening, allowing gardeners to enjoy its beauty on patios, balconies, and other outdoor spaces. When selecting containers for the Campanula persicifolia ‘Kelly’s Gold’, consider the following factors:

  • Container Size: Choose a container that provides ample room for the plant’s root system to grow, while ensuring that it is not excessively large, which can lead to waterlogged conditions.
  • Drainage Holes: Select containers with adequate drainage holes to prevent water from accumulating at the base.
  • Potting Mix: Use a well-draining potting mix, enriched with organic matter, to provide the necessary nutrients and support for the plant.

Container Care

Caring for the Willow Bell in containers is relatively straightforward, with a few specific considerations to ensure its health and vigor:

  • Watering: Monitor the moisture level of the potting mix and water the plant as needed, ensuring that excess water can freely drain from the container.
  • Sunlight: Place the container in a location that receives at least 6 hours of sunlight per day, adjusting as needed to protect the plant from intense midday sun.
  • Fertilization: Apply a balanced, water-soluble fertilizer at half-strength every 4-6 weeks during the growing season to provide essential nutrients.

Common Diseases

Like any plant, the Willow Bell is susceptible to certain diseases, particularly those related to moisture and air circulation. Recognizing the signs of common diseases and implementing preventive measures is essential to safeguard the health of the Campanula persicifolia ‘Kelly’s Gold’. Here are some common diseases and their management strategies:

Disease Diagnosis

  1. Powdery Mildew: Identified by the presence of a powdery white coating on the leaves and stems, powdery mildew can be controlled by improving air circulation and using organic fungicides.
  2. Leaf Spot: Characterized by dark or discolored spots on the leaves, leaf spot can be managed by removing and disposing of infected foliage, promoting proper air circulation, and avoiding overhead watering.

Common Pests

While relatively resistant to pests, the Willow Bell can occasionally fall victim to common garden pests. Understanding these pests and their control methods is essential for maintaining a healthy and thriving plant. Here are some common pests and their management strategies:

Pest Control

  1. Aphids: These small, soft-bodied insects can be removed from the plant by spraying them with a strong stream of water. Additionally, introducing natural predators, such as ladybugs, can help control aphid populations.
  2. Snails and Slugs: Control snails and slugs by removing debris and hiding spots near the plant, using physical barriers, such as copper tape, and applying organic slug and snail baits.

Botanist’s Tips

As a plant scientist with a passion for the beauty and diversity of plants, I have had the pleasure of cultivating and studying the Willow Bell in various settings. Based on my experience, here are some additional tips for growing and enjoying the Campanula persicifolia ‘Kelly’s Gold’:

  • Companion Planting: Pair the Willow Bell with other sun-loving perennials, such as lavender, salvia, and coreopsis, to create visually dynamic and ecologically beneficial garden beds.
  • Pollinator Attraction: The Willow Bell’s bell-shaped flowers are irresistible to bees and butterflies, making it a valuable addition to pollinator-friendly gardens.
  • Seasonal Maintenance: After the initial bloom period, consider cutting back the flowering stems to promote a tidier appearance and potential reblooms later in the season.

Fun Facts

To further appreciate the allure of the Willow Bell, here are some fun and intriguing facts about this captivating plant:

  1. The species name “persicifolia” is derived from the Latin words “persicum” and “folium,” meaning “peach” and “leaf,” respectively, due to the resemblance of the plant’s foliage to that of a peach tree.
  2. The Willow Bell’s flowers not only add visual appeal to the garden but can also be used as cut flowers in floral arrangements, bringing a touch of elegance indoors.
  3. Despite its delicate appearance, the Willow Bell is relatively deer resistant, making it a valuable addition to landscapes in deer-prone areas.

Links to External Resources

To expand your knowledge and appreciation of the Willow Bell, I have curated a list of reputable external resources that provide further insights, tips, and visual inspiration for this delightful plant:

  1. Royal Horticultural Society – Campanula persicifolia ‘Kelly’s Gold’
  2. Missouri Botanical Garden – Campanula persicifolia
  3. The Spruce – Willow Bellflower (Campanula persicifolia)
  4. Fine Gardening – Growing Campanulas
  5. Gardening Know How – Campanula Propagation

In conclusion, the Willow Bell, or Campanula persicifolia ‘Kelly’s Gold’, is a perennial plant that captivates with its charming yellow bell-shaped flowers and graceful foliage. From its cultural needs to disease management and propagation methods, understanding the diverse aspects of the Willow Bell equips gardeners with the knowledge and skills to successfully cultivate and appreciate this enchanting plant. Whether adorning garden borders, containers, or cut flower arrangements, the Willow Bell is a versatile and cherished addition to any landscape. Embrace the beauty of the Willow Bell and witness the radiant allure it brings to your outdoor spaces.

Remember to nurture your garden and allow the flourishing beauty of nature to inspire and rejuvenate you.

Happy gardening!

This article is based on the expertise and experiences of a plant scientist dedicated to promoting horticultural knowledge and appreciation.

Picture of Peter Taylors

Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.